using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _1._1
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = 10;
            int b = 38 * 17;
            int c = (31 - 5 * a) / b;
            Console.WriteLine(c); // c = 0

        }
    }
}